ubby.dk is a .dk domain served by 2 nameservers (bella.ns.cloudflare.com, mark.ns.cloudflare.com). It was registered on 25 January 1999 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 209.42.196.213 is hosted by PrivateSystems Networks (AS63410) in The Netherlands. Mail is handled by ubby-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 209.42.196.213 | 300s | cw105.codafgroup.com | AS63410 | PrivateSystems Networks | 209.42.192.0/18 | 🇳🇱 The Netherlands | Amsterdam |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.24 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| cisco-ci-domain-verification=270dc899378c00ff43cd6064abd9750d5b6e6914ede60eec556e0001710d8cff |
| hg8jbj9q6yb8lvg03tnkqrgts74fylpp |
| v=spf1 include:spf.protection.outlook.com include:spf.mandrillapp.com -all |
| Policy | Record (ubby.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com include:spf.mandrillapp.com -all |
| www | Address record (no CNAME) |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-ubby-dk._domainkey.ubby.onmicrosoft.com | RSA · ~2048 bit |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
DNS lookups: 2/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2406406634 |
| Primary NS (MNAME) | bella.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 1999-01-25 |
| Expires | 2027-03-31 (165d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-07 13:37:35 | 2328ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-03 12:03:57 | 1071ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-25 02:16:39 | 1304ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-23 18:03:54 | 1078ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-15 03:48:13 | 1184ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-08 02:05:12 | 1001ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-03 12:41:50 | 2993ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-28 00:05:17 | 1150ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-26 21:49:52 | 1222ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-19 15:48:33 | 2008ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-26 14:18:03 | 1985ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-23 12:30:41 | 1367ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-09 02:49:22 | 2850ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-03 16:06:58 | 1735ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-01 03:42:38 shown | 1634ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-23 19:06:11 | 2875ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-21 16:51:18 | 1160ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 22:31:26 | 3045ms | 2 NS 1 A 1 MX | 🔒 Secure |